We show that these species have only been reproductively isolated for approximately 6000 years(95% highest posterior density of 905–22 628), and that this life-history change may be responsible for dramaticgenetic consequences, including ...

Why oh why did it have to be 6,000 years?

you know why!

CHECKMATE, DRAWINIST

--------------You're obviously illiterate as hell. Peach, bro.-FtK

Finding something hard to believe based on the evidence, is science.-JoeG